We look at the division of 111709 by 28 
The aim is to understand the frequency of 28 in 111709.

Step 1:
When dividing 1 by 28, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 28

Step 2:
When dividing 11 by 28, we get 0 with a remainder of 11.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 11 to get 11.
Fetch the next digit (1) from the dividend, attach it to 11 and continue: 111 / 28

Let's proceed to step 3:
28 can be fit into 111 3 times, resulting in a remainder of 27.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtract 84 from 111 to get 27.
Append the next digit (7) from the dividend to 27 and continue with: 277 / 28

Moving on to step 4:
When dividing 277 by 28, we get 9 with a remainder of 25.
Write down 9 as next digit of the result. 
Result so far: 39.0
The remainder is 25 after subtracting 252 from 277.
Take the next digit (0) from the dividend and append it to 25, then repeat: 250 / 28

Advancing to step 5:
250 divided by 28 is 8 with a remainder of 26.
The number 8 becomes the next digit in our result. 
Result so far: 398.0
If we subtract 224 from 250, we get 26.
Bring next digit (9) of the dividend behind the 26 and repeat the process: 269 / 28

Moving on to step 6:
269 divided by 28 is 9 with a remainder of 17.
Use 9 as the next digit of our solution. 
Result so far: 3989.0
Deduct 252 from 269 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 7:
28 can be fit into 170 6 times, resulting in a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 3989.6
If we subtract 168 from 170, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 8:
20 divided by 28 is 0 with a remainder of 20.
The next digit of our result is 0. 
Result so far: 3989.6
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 9:
The number 28 fits into 200 7 times, leaving a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 3989.607
Deduct 196 from 200 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 10:
The number 28 fits into 40 1 times, leaving a remainder of 12.
Use 1 as the next digit of our solution. 
Result so far: 3989.6071
The remainder is 12 after subtracting 28 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 11:
28 goes into 120 4 times with a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 3989.60714
If we subtract 112 from 120, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 12:
28 can be fit into 80 2 times, resulting in a remainder of 24.
Record the quotient 2 as the next digit in the result. 
Result so far: 3989.607142
Deduct 56 from 80 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 13:
If we divide 240 by 28, we get 8 and a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 3989.6071428
Deduct 224 from 240 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 14:
160 divided by 28 is 5 with a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 3989.60714285
Deduct 140 from 160 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The quotient of the division is 3989.60714285, and the remainder is 2e-08.